Autogenerated update (2017-10-12)

Update:
- content_v2
- dlp_v2beta1
- speech_v1

generated/google/apis/speech_v1/classes.rb

@@ -403,7 +403,8 @@ module Google
         # indicates an estimated greater likelihood that the recognized words are
         # correct. This field is typically provided only for the top hypothesis, and
         # only for `is_final=true` results. Clients should not rely on the
-        # `confidence` field as it is not guaranteed to be accurate or consistent.
+        # `confidence` field as it is not guaranteed to be accurate, or even set, in
+        # any of the results.
         # The default of 0.0 is a sentinel value indicating `confidence` was not set.
         # Corresponds to the JSON property `confidence`
         # @return [Float]